diff --git a/.github/workflows/ci_ut.yml b/.github/workflows/ci_ut.yml
index 6d0b2a2a1d5c9e88856c65f004180b4aa0355ac5..75f6408f5897cbb8a8881f2d0a2988defbb6ea15 100644
--- a/.github/workflows/ci_ut.yml
+++ b/.github/workflows/ci_ut.yml
@@ -59,7 +59,7 @@ jobs:
           git fetch origin
       - name: Compile
         run: |
-          export MAVEN_OPTS='-Dmaven.repo.local=.m2/repository -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -XX:+CMSClassUnloadingEnabled -XX:+UseConcMarkSweepGC -XX:-UseGCOverheadLimit -Xmx3g'
+          export MAVEN_OPTS='-Dmaven.repo.local=.m2/repository -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -XX:+CMSClassUnloadingEnabled -XX:+UseConcMarkSweepGC -XX:-UseGCOverheadLimit -Xmx5g'
           mvn test -B -Dmaven.test.skip=false
       - name: Upload coverage report to codecov
         run: |